Adding up 2 entities

Hi,
I have 2 entities that I would like to add up so that I can work with one entity, but I can’t figure it out.
So it concerns 2 entities that I receive via the Slimmelezer+ :

state_class: total_increasing
unit_of_measurement: kWh
device_class: energy
friendly_name: Energy Consumed Tariff 1

and

state_class: total_increasing
unit_of_measurement: kWh
device_class: energy
friendly_name: Energy Consumed Tariff 2

I’d like to add them up to something like “Total Home Usage.”
Anyone any idea?

Maybe something like:

template:
  - sensor:
      - name: "Total Home Usage"
        unit_of_measurement: kWh
        device_class: energy
        state: "{{ states('sensor.1')|float + states('sensor.2')|float }})

?

I think that works! I’ve made some adjustments, but you were pointing me in the right direction. Thanks!

template:
    - sensor:
      - name: "Total_Home_Usage"
        state_class: total_increasing
        unit_of_measurement: "kWh"
        device_class: energy
        state: "{{ states('sensor.energy_consumed_tariff_1')|float + states('sensor.energy_consumed_tariff_2')|float }}"

      - name: "Total_Home_Production"
        state_class: total_increasing
        unit_of_measurement: "kWh"
        device_class: energy
        state: "{{ states('sensor.energy_produced_tariff_1')|float + states('sensor.energy_produced_tariff_2')|float }}"

yes, sorry - I missed:

state_class: total_increasing